Schafer, meanwhile, has been dealing with the knee sprain since April 29, when he fell rounding first base after reaching on a bunt single. He played in eight games after suffering the injury, hitting .286/.348/.333, but the speedster was caught stealing in his only stolen base attempt.
"Schafer's right knee issue has lingered," Twins manager Paul Molitor said. "We thought initially he could play through it and see improvement, but we haven't seen that. So he's going to the DL to try to get that thing to 100 percent."
Schafer last played on Sunday, so the roster move is retroactive to Monday. He's eligible to come off the DL on May 26.
"He's gotten to the point where he doesn't want to battle through something that could last all season," Molitor said. "I think it probably affects all of the things he does. I think it's slowed him some. We've seen him out on some bang-bang plays he probably would beat out. Base stealing and balls in the outfield, it's just one of those things where his legs need to be good for him to be the kind of player who can help us."
Rhett Bollinger is a reporter for MLB.com. Read his blog, Bollinger Beat, follow him on Twitter @RhettBollinger and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.